Samsung Galaxy Tab PRO 10.1 (LTE-A) (SM-T525) Firmware Overview
What is the latest SM-T525 firmware?
T525XXUAOL6, released January 5, 2016 for region PHN with Android 4.4.2. The archive holds 2 official builds for this region.
Is the Samsung Galaxy Tab PRO 10.1 (LTE-A) still getting updates?
Most likely not: there has been no new firmware since January 2016, so Android 4.4.2 is the last version this model got. The final builds below are still the best choice for a clean reinstall.
SM-T525 firmware for region PHN
How to Flash SM-T525 Firmware
Put the Samsung Galaxy Tab PRO 10.1 (LTE-A) into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Use HOME_CSC to keep your data, CSC for a full wipe.